Rotary sleeve valve



Nov. 4, 9 1,514,347

W. SCHMID ET AL EQTARY sLEEvE VALVE Filed Nov. 13. 1920 2 Sheets-Sheet l a Q ATTORNEY WITNE -j q Q Nov. 4, 1924, 1,514,347

w. SCHMID ET AL ROTARY SLEEVE VALVE Filed Nov. 13 1920 2 Sheets-Sheet. 2

NESSM- 4 l atented Nov. 4-, 192

@NKTED STATEfi I tare-sat PATENT. ounce;

WALTER SCHMID AND HANS HANHART, or nunrnverolv sra'rron. NEW YORK.

ROTARY SLEEVE VALVE.

Application filed November 13, 1820. Seria1 No, l23,976.

To aZZ whom it may concern:

Be it known that we, \VALTER SoHMIo and HANs HANHART, citizens of the United States, residing at Huntington Station, "L. 1., in the county of Suffolk and State of New York, have invented new and useful Improvements in Rotary Sleeve Valves, of

which the following is a specification.

This invention relates to improvements in rotary sleeve valves for internal combustion engines, and one of the objects is to provide a device of this naturewhich shall comprise intake and exhaust ports for a plurality of cylinders. 1

Another object is to provide such a de vice which shall be simple in construction and efficient in operation. i

Other objects will appear hereinafter.

All of these objects are accomplished by means of mechanism hereinafter described and claimed, and which is fully illustrated in the accompanying drawing consisting of two sheets in which Figure 1 is a longitudinal vertical sectional view of a four cylinder engine embodying the present invention.

Figure 2 is a detail sectional view crosswise of the cylinder head, on line 22 of Figure 1, the inlet being shown in elevation.

Figure 3 is a view on line 3-3 of Figure 1, showing the valve in exhaust position.

Figure t is a view on line 4-4 of Figure 1, but showing the valve in intake position.

Like characters of reference refer to like parts in the several views.

Referring more particularly to the drawings, 1 represents the cylinders of an internal combustion engine provided with pistons 2 and with a single port 3 for each of said. cylinders. The cylinder head 4 is secured to the cylinders in such. a manner as to form. a tapered circular bearing for a sleeve member generally designated as 5.

The sleeve 5 comprises an outer'wall 6 and two internally positioned walls 7 and 8. There is also a circular perforated wall 9 and radial walls 10 and 11 connecting walls 7 and 8 respectively, with the outer wall 6 so as to define ports 12. Between walls 7 and 8 is a space from which the air is exhausted so as to form a vacuum between th in k an exhaust,

F itted' in oneend of walls 6 ands a plug portion 13 which may be formed integrally --with the sleeve if desired. This plug portion is provided in itsouter face with aball race 14: in which are ball bearings 15. The balls are confined in race 14 by a ball retainer 16 which is provided with apertures. receiving studs 17 upon which are mounted springs "18 which constantly press inwardly on the container 16 so as to take up any slack which may "occur from wear or like causes, which being noted that sleeve'fiis tapered from. plug portion 13 to-the wall 9.- At 19 an inlet from the carburetor opens through thecylinder head 4:, and apertures 19' conduct the i mixtureiinto the inlet passage.

The usual water, chambers for cooling purposes are shown at 20,'and circulatlon is had with the radiator as is usual, the

or asprocket or any sort of wheel which is moved positively and can be synchronized with the other devices for operating at "the proper times. I I

The ports 12 above mentionedare positioned in the same planes as the respective ports 3 of thecylinders, and intake ports 25 are formed in the wall 6 in line with ports 12 and 3. Ports 12 maybe termed exhaust ports and ports 25, intake ports on account of their respective functions.

One of the essential features is the taper of the intake chamber so asto supply all of the cylinders properly with fuel, and the corresponding reverse. taper of the ex haust passage so as to provide ample space for the gases to pass off.

It will be readily understood that at each revolution of the sleeve 5, said sleeve will terswith the-port 3 during the scavenging or exhaust strokep then the port 25registers with the port 3 during the intake stroke; and during the compression and explosion strokes, the port 3 is closed by a portion of the wal16, The four conditions are shown by Figure 1, the cylinders from left to right showing respectively, the exhaust, explosion, intake and compression strokes.

While we have described what we con sider to be the most desirable embodiment of our invention, it is obvious that many of the details may be varied without in any Way departing from the spirit'of our invention; and we therefore do not limit ourselves to the exact details of construction hereinset forth nor to anything less than the Whole of our invention limited only by the appended claims.

What we claim as new and desire tosecure by Letters Patent is ,1. A rotary valve for internal combustion engines comprising tapered sleeve inner and outer spaced shells defining intake and. exhaust manifolds, both of said shells being of taper formation and arranged with the taper running in the opposite direction to the taper of the sleeve, the spaces between said shells constituting a vacuum chamber for insulating said intake manifold from the heat of said exhaust manifold.

'2. In a device of the class described, the combination of a plurality of cylinders, a common cylinder head therefor and co-operat-ive therewith to form a tapered bearing, a. tapered sleeve mounted in said bearing and including an intake manifold tapering in the same direction as the sleeve and an exhaust manifold tapering in a direction opposite to the tapering of the sleeve, means for securing said sleeve in said bearing, and a vacuum space arranged between said manifolds for insulating the intake manifold from the heat of said exhaust manifold.

In a. device of the class described, the

combination of a plurality of combustion engine cylinders, a common cylinder head therefor having a tapered bore, a tapered sleeve rotatably mounted in said bore and provided with a pair of spaced outer and inner shells tapering in a direction opposite to the taper of said sleeve, the space between said sleeve and outer shell constituting an intake manifold and the interior of said inner shells defining an exhaust manifold, and separate intake and exhaust ports communicating with said outer and inner shells respectively. for each of said cylinders.

at. A rotary valve for internal combustion engines comprising an outer tapered sleeve adapted to be arranged in a correspondingly tapered bore in a cylinder head of the engine, and provided with a plurality of radially aligned apertures adapted to be brought successively into registration with the intake pipe upon each revolution of the sleeve, an outer shell enclosed within said sleeve and tapering in a direction opposite to that of the sleeve, the space between said shell and said sleeve constituting an intake manifold, an inner shell tapering in the same direction as the outer shell and enclosed within the same and constituting an exhaust manifold and spaced therefrom to define a vacuum space for insulating the heat of the exhaust manifold from said intake manifold, apertures in communication with the intake manifold and the exhaust manifold for registration with the ports in the cylinder head upon each revolution of said sleeve.

In testimony whereof we have affixed our signatures.

l/VALTER SCHMID. HANS HANHART. 

